器械和打结英文版.ppt

SURGEON’S KNOT Left hand rotated by supination extending left index finger to again pass purple strand through, forming a double loop. SURGEON’S KNOT Horizontal tension is applied with left hand toward and right hand away from the operator. This double loop must be placed in precise position for the final knot. SURGEON’S KNOT With thumb swung under white strand, purple strand is grasped between thumb and index finger of left hand and held over white strand with right hand. SURGEON’S KNOT Purple strand released. Left hand supinates to regrasp purple strand with index finger beneath the loop of the white strand. SURGEON’S KNOT Purple strand rotated beneath the white strand by supinating pinched thumb and index finger of left hand to draw purple strand through the loop. Right hand regrasps purple strand to complete the second throw square. SURGEON’S KNOT Hands continue to apply horizontal tension with left hand away from and right hand toward the operator. Final tension on final throw should be as nearly horizontal as possible. TWO-HAND TECHNIQUE By further supinating left hand, white strand slides onto left index finger to form a loop as purple strand is grasped between left index finger and thumb. TWO-HAND TECHNIQUE Left hand rotated inward by pronation with thumb carrying purple strand through loop of white strand. Purple strand is grasped between right thumb and index finger. TWO-HAND TECHNIQUE Horizontal tension applied with left hand away from and right hand toward the operator. This completes the second half hitch. TWO-HAND TECHNIQUE The final tension on the final throw should be as nearly horizontal as possible. INSTRUMENT TIE Short purple strand lies freely. Long white end of strand held between thumb and index finger of left hand. Loop formed by placing needleholder on side of strand away from the operator. INSTRUMENT TIE Needleholder in right hand grasps short purple end of strand. INSTRUMENT TIE First half hitch completed by pulling needleholder towar